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It doesn't look like a pedro, brigesii or peruvianus to me. Could be though, cacti grow funny sometimes. Spines are too short and regular to be bridge or peru. No way it's pedro. Probably a common variety.

--------------------“A democracy cannot exist as a permanent form of government. It can only exist until the voters discover that they can vote themselves largesse from the public treasury. From that moment on, the majority always votes for the candidates promising the most benefits from the public treasury with the result that a democracy always collapses over loose fiscal policy, always followed by a dictatorship.” (attributed to Alexis de Tocqueville political philosopher Circa 1835)

I'm with faslimy on it being most like a T. peruvianus. It does seem to lack the more lengthy central though of most T. peruvianus, but otherwise spine number, thickness, and formation seem about right on, as well as the V-notch. I don't think it is a T. bridgesii as they usually have three radial spines without a central, though I have seen some with a central. It does though look a lot like a plant I once got under the name T. cuzcoensis, but which I take to be a T. peruvianus form. Here's my plant below.

Sorry I haven't been around much, I have been pursuing some other interests during the cactus dormancy.